Charles mcneal



O. MONEAL.

SPLIT PULLBY.

Patented Apr. 29, 1890..

(No Model.)

UNITED ST TES PATENT OFFICE.

CHARLES MONEAL, OF GOSHEN, INDIANA, ASSIGNOR OF ONE-HALF TO I EDWARDSKILLMAN, OF SAME PLACE.

' SPLIT PU LLEY.

SPECIFICATION forming part of Letters Patent No. 427,003, dated April29, 1890.

Application filed November 29, 1839- Serial No. 331,928. (No model.) A

split pulley. Fig. 2 is a sectional view through one half thereof in theplane of the spokes. Fig. 3 is a detail View of one of the hub-sections,

This invention is an improvement in split pulleys, and its object is tosimplify and cheapen the construction of the pulley shown in my patent,No. 415,920, of December 26, 1889, and to so form the hub or metallicparts thereof that they can be used direct from'the castings withoutboring or drilling thereof; and the invention consists in the novelconstruction of the hub proper, and in certain other novel details ofconstruction and combination of parts, hereinafter fully described andclaimed.

Referring to the drawings by letter, A A designate the opposite similarhub-sections, E E parallel spoke-bars secured to the respectivesections, and GG the opposite rim-sections, each constituting asemicircle and respectively attached to bars E E, as indicated in thedrawings. The hub is parted longitudinally and parallel with the shaft,and the rim is parted in line with the plane of parting of the hub. Eachhub section consists of a nearly semi-tubular portion B, partlyembracing the shaft W, upon which the pulley is mounted, and having nearits ends and on opposite sides perforated ears I) b, as shown. At thecenter and on the outer face of each portion B is a cross-piece O, whichis formed integral with portion B and projects equally on each sidethereof, and lies at right angles thereto, as shown, and parallel withthe line of parting of the hub, and on the sides of piece 0 are flangesc 0, parallel with the plane of the pulley, and near the opposite endsof said piece are transverse ribs d 01, extending from flange to flangeat right angles to piece 0, and exterior to said ribs the pieces 0 areperforated, as at D D, for the passage of bolts.

The bars E E are set edgewise to the shaft W, and are centrallysupported by and secured to pieces 0 O of the respective sections A A,their edges resting on said pieces between the flanges 0 thereof, andbeing notched transversely, as at e e, to fit over ribs cl of the pieces0, and F F are bolts passing through placement of bars E, and ribs 01prevent lon-j gitudinal movement of said bars on the hubsections, whilebolts F F only have to sustain the centrifugal strain exerted when thepulley is in motion.

The rim-sections G G are built up or made,

as usual, of strips of wood, and are mortised at g g to receive thetenoned ends of bars E E, which bars are secured in the mortises bymeans of pins II H and keys 7th, pins H passing centrally through thetenons on the ends of the bars, and keys h h passing through notches inthe sides of the-tenons and in the rim, as shown in Fig. 2.

I I designate spokes rising centrally from bars E E, being securedthereto by mortiseand-tenon joints and pins, or in other suitablemanner, the outer ends of said spokes being secured to the rim-sectionsG, like bars E, as described. Y

J J designate angle-irons on opposite sides of spokes I, and resting onthe edges of bars E, the said angle-irons being flanged on their sides,as at j, to partly embrace the spokes and bars, and they are secured tospokes I by means of bolts K, which pass transversely through the spokesand proper openings in the irons J, and are secured by clamping-nuts 7cis, as shown, while the bolts F pass through openings in the portion ofirons J, resting upon bars E, and thereby clamp the irons to the bars,as indicated. This construction rig idly connects both spoke-bars andspokes to the hub-sections, and is useful in large wheels to insureproper strength and rigidity, but in small wheels irons Jmay be omitted;It will be observed that the pulleys thus made are formed in two similaropposite halves, which can be united or separated Without disconnectingthe hub-sections from the rim or spokes.

In placing the pulley on a shaft the opposite halves of the pulley arebrought on opposite sides of the shaft and the portions B B of the hubplaced thereagainst directly opposite each other. Then threaded bolts LLare passed through the opposite ears I) of the opposite sections, andclamping-nuts Z Z are placed thereon and tightened, thereby drawing thesections together and clamping the shaft firmly between them, as in thedrawings, the rim-sections being brought together simultaneously, andtie-bolts M M may be employed to bind the rim-sections more closelytogether, said bolts passing through the bars E E, near therim-sections, and being bound by nuts in m, as indicated. served thateach hub-section supports its halfrim section and the spoke-bar andspoke independently of the other half-section, and that the rim-sectionspart in the same plane as. the hub-sections, so that the pulley can beforcibly clamped upon the shaft Without distortion thereof or unduestrain on the spokebars and rim.

The hub-sections are preferably of iron, and as the openings therein areall at right angles to the plane of parting or shaft they can be castready for use Without requiring any finishing or drilling tools ormachine work ,The hub-sections are interchangeable and can be used intwo, four, six, or eight armed pulleys, and hubs of different sizedbores can be substituted for the hubs built in the pulley without takingthe rim and spokes and bars of the respective pulleysections apart, ifdesired. lVhen a very wide-faced pulley is to be made, the spokes andspokebai's can be duplicated-that is, arranged in pairs side by side, asis obvious.

In my patent referred to thehub is divided at right angles to theparallel spoke-bars or parting-line of the rim, and it is necessary toIt will be oh- I separate the hub-sections from the other portions ofthe pulley when removing the pulley from the shaft.

Having thus described my invention, I claim-- 1. In a split pulley, thecombination of op posite 1ll11-SGCl3lOI1S, each having a transversespoke-bar, with the hub-sections respectively connected to saidspoke-bars, and each having a semi-tubular portion B engaging the shaft,bolt-openings in its ends on opposite sides, and a piece C, lying atright angles to and across piece B and parallel with the parting-planeof the hub, pieces 0 being secured to the spoke-bars, and the boltspassing through the openings in portion B to unite the hub-sections,substantially as described.

2. In a split pulley, a hub composed of opposite sections each having asemi-tubular portion B to engage the shaft, and a crosspiece 0, lying atright angles to and formed with portion B, and the said portion B beingperforated at its ends on opposite sides for the passage of theuniting-bolts of the sections, which bolts are at right angles to pieces0, in combination with the rim-sections and spokes, substantially asspecified.

3. The combination of the hub composed of opposite similar sections,each having a portion B to engage the shaft, a piece 0 at right anglesto and across portion B, and perforatedlugs bat the ends of portion B,with the spoke-bars E fastened to pieces 0, the spokes I, angle-irons .IJ, the rim-sections, and the uniting bolts and nuts of the parts, allsubstantially as and for the purpose de' scribed.

In testimony that I claim the foregoing as own I affix my signature inpresence of two witnesses.

. CHARLES MGNEAL. WVitnesses:

EDWARD SKILLMAN, CHAS. D. SHULTZ.

